Experiments Included:

  • Study of DSBSC modulation / demodulation.
  • Study of the Frequency Division Multiplexing / De-multiplexing with sinusoidal wave.

FDM trainer explores concepts relating to Frequency Division Multiplexing and De-multiplexing. This trainer is self contained with two Audio inputs through audio generators and two DSB Modulator and De-modulators.

Both carriers are generated using crystal oscillator. This ensure stable carrier. At De-modulator section,  Ceramic Band Pass Filter, DSB De-modulator and Low Pass Filter is used.


  • Power Supply Included
  • Required Circuits Tested
  • Each Section Clearly Marked for Input and Output
  • Each Section Works as an Independent Unit
  • Audio Generator Included for each section
  • RF Filter, Amplifier and Low Pass Filter Included

Technical Features:

  • Carrier 1: Sine with gain adjust
  • Carrier 2: Sine with gain adjust
  • Audio Generator 1: Frequency and Amplitude adjustable.
  • Audio Generator 2: Frequency and Amplitude adjustable.
  • Modulator: Balanced Modulator
  • Demodulator: DSB De-modulator
  • Band Pass Filter 1: Ceramic type
  • Band Pass Filter 2: Ceramic type
  • Amplifier: AC Amplifier with adjustable gain
  • Low Pass Filter: 5th Order Butterworth Filter with cut off frequency of 3.4 Khz
  • Interconnection: 2mm gold plated pins

Accessories: 2mm Patch Cords, Experiment Manual and Power cord